Windmill



Y 2 Sheets-Sheet 2.

(No Model.)

J. N. KNOX.

WINDMILL.

N0, 359,930. Patented Mar. 22, v1887.

TV'TJVESSES UNITED STnTns PATnNT rTriese Josinet n. KNOX, or SAN Josu, oanironnin.

wlNoMlLL..

, SPECIFICATION forming part of Letters Patent No. 359,930, dated March 22, 1887.

Application died October-18, 1586. Serial No, 216,537. (No mollet) To @ZZ whom it may concern:

Be it known that I, Josmrr N. KNOX, of San Jos, in the county of Santa Clara and State of California, have invented certain new and useful Improvements in Wrindniills; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which forni part of this specification, in which- Figure 1 is a perspective view illustrating my improvement in windmills. Fig. 2 is a detail sectional view of the saine. Fig. 3 is a side elevation. Fig. 4: is a vertical section of Fig. 3 on line a:

My object is to improve windmills in the manner which will be fully understood from the following description and claims when taken in connection with the annexed drawings.

Referring to the accompanying drawings, A designates the frame or derrick of the mill of the usual well-known construction, with the legs a inclining outwardly, as shown; and B is a bifurcated bearingi`raine, having its base secured upon the top of the saine, so as to rotate thereon. The legs of the frame A are secured together near their tops by the bolts c, the ends of which pass through eyes in the ones adjacent thereto, and are held in place by nuts, as shown. The legs b of the frame B extend upward on each side, and have upon their ends the bearings b for the wheel-shaft or main shaft C, provided with the crank c, the center of which is vertically above the reciprocating rod D. The said shaft carries the wheel c" on its end, extended outside the proper bearing. The rod D Inoves in openings or bearings d d in the vertical standard E, secured centrally between the legs b b, its lower end being bolted or otherwise secured to the upper surface of the base portion of the frame B. The said standard is provided with the longitudinal slot e, in which the rod D ing d a vertical opening, et, of larger diaxneter than the same extends through the base portion of the frame B.

F is a bifurcated link or conneclingrod, having at its top the bearingj', which engages on the center of the crank c. The legs f of said link pass down on each side of the standard E, and have their ends pivoted upon the rod D atasuitable point by nieans of a pin,f', which passes through the slot e, the rod D being provided with bosses th rough which the pin passes, so that the legs f clear the standard E.

G is the directing-vane whichl brings the wheel c to the proper position in relation to the wind, and g is the frame to which it is attached. Theupperandlowerrailsofsaid frame have secured to their ends pintles or hooks y', which engage in suitable openings in proj ections 92 standing from the flange on the adja cent leg b of the fraine B.

From a staple or hook secured to the outer transverse rail, II, of the vane-frame g a chain, 7i, passes around the sheaf of a bloeien', secured to the bar I, bolted at its center to -the vane-frame. After passing around said sheaf the chain passes over a shcat' of a block, z', secured to the bar I near the leg Z, and then descends through a suitable opening in the bascplate e of the standard E, and through the opening e, with its lower end within easy reach, so that the vane-frame can be turned from below.

j is a chain extending from astaplc or hook secured to the rail I-Ilto a staple or hook on the edge of the bar I, below the block It', which is secured to said bar near one end.

L is a chain extending from a staple or hook secured to the inner transverse rail, Ii, of the vane-frame to the sheaf of a block, L, secured to the bar I near the end opposite that to which the block h is secured. The said chain, after passing around the sheaf, is secured to the outer end of a coiled spring, M, having its inner end secured to the bar or rail I.

By means of the chains j and 7c the vanefranie will give or bend to one side during a variable wind, so as not materially to interfere with the action of the wheel. The wheel-shaft, having a double bearing, will support the wheel without having a tendency to bind, as it would ifit were set in a single bearing; and the IOO crank on said sha-ft, being vertically above the vertical reciprocating rod, will impart its mo# tion thereto by means of the link, so that the said rod will not be liable to bind in its bearings, as would happen if the Weight of the wheel and its shaft tended to bear to one side.

One of the essential features of my improve` ment is the rigid U-shaped Vane and wind- Wheel-snpportin g frame rigidly sustaining said vane and Wheel, and so applied to the main supporting-frame that the said U-shaped supporting-fraineisallowed toswivelhorizontally., Byleferenee to Fig. 4 of the annexed drawings, it Will be observed that I have a capplate, p', upon the upper ends of the down- Wardly-diverging legs of the main frame A, and that I employ tiebraces a for these ends of the legs.

Having described my invention, what I claim as new is- In awindxnill, the combination, with the U-shaped frame B, of the direeting-vane pivoted thereto, the horizontal bar I,` secured to one of the limbs of said; frame, the lchains h',

j, and 7.', connected tothe vertical bars H K` of the vane-frame, the chain hibeing also con-l neoted to oar I, the blocks h z' Land a coiled spring connecting the chain 7c to the ibar Lall substantially as described;

In testimony that I claimthe foregoing as my own I afiix my signature in presence of` 

